Pipe-painting machine.



R. HUBBELL. PIPE PAINTING IIIACHIIIE EPL'ICATION FILED JAH.20. I9I5. A

` Patented NOVu 9, 1915.

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PIPE PNTING MACHINE.

APPLICATION HLED'JAN.20. 1915,

Patented Nov. 9, 1915.

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1R. H. IIUBBILLJ PIPE PAINTING MACHINE.

APPLlcATloN FILED 1AN.20.|9|5,

Patented Nov. 9, 1915.

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RUSSELL H. HUBBELL, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOB. TO HILL, HUBBELL @a CO., OF SAN FRANCISCO, CALIFORNIA, A FIRM.

PIPE-PAINTING MACHINE.

Specification oi Letters Patent.

Application led January 20, 1915. Serial No. 3,231.

chines, of which the following is a speciiical tion.

rIhis invention relatesy machine.

rihe object of the present invention is to provide a simple, compact, easily operated to a pipe painting lmachine of the character described for l ings 6, 'is a shaft 7,

paintingor coating pipe lines; and particularly to provide a machine which is adapted to coat the bottom and sides of the pipe 'With a bitumastic composition.

Further objects Will hereinafter appear.

The invention consists'of the parts and the construction sand combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings in Which- Figure 1 isa side elevation application of ythe invention. Fig. 2 vis a cross section on line 2-2, Fig. 1. Fig. fis an end view of Fig. 1.

A indicates the pipe line to be painted Aor coated. Adapted to be supported by rollers 2 and moved along the pipe by a driving mechanism hereinafter to be described `is ra carriage 3, and suspended frein the fcarria'ge, by hangers 4:, and positioned centrally below the pipe is a rectangular shaped tank 5. Journaled crosswise of the ta-nlnfiin bearand secured on the shaft centrally between the bearings is a hub member, which is shaped to form a support for a plurality of'arms S, upon each of which is secured a plurality of brushes 9; there being in this instance four arms and four brushes on each arm. Secured on the ends of the shaft, inside of the tank, is a pair of flanged collars 10, and secured to each of said flangedl collars is a plurality of radially disposed spring arms 11, on the outer ends of Which are secured brushes 12; there being in this instance four arms on each collar The brushes may be spective arms in any different conditions and coating materials handled.

The present machine is particularly con-V shorving 'the and one brush on each arm.V

structed to coat pipes of large diameter with a'bitumastic composition. This material is preferably iirst heated and `iis'then poured into the tank through va hopper 13 suitably secured on the side of the tank. The material is then picked up 'by-fthe brushes and applied to the bottom andrsides of the pipe.

A coating material of :a bitumastic base has a tendency to set `or harden very quickly. This is, however, overcome in the present instance by providing- `a heater 14 which maintains a suiiicieirtl'y high temperature to keep the ycontents of the tank in a iiuid-like condition. It is .further prevented from hardening as the -Trevolving brushes create considenable agitation.

v shaft T, upon which the several brushes are mounted., through chains 14, indicated by dot-ted lines, and sprocket gears 15-15, v16B- 16, V17"--17 and 184-18 from shaft 19 jouinaled in an upright frame 20 mounted 'on lthe carriage; shaft 19 being driven from any ysuitable source of poiver or, as here shoivnby cranks 21.- There are tivo sets of supporti-ng rollers2. The forward set being secured on the same shaft as sprocket gears l and y1T will consequently be driven by same and will inthis manner propel the ca-rriage or machine in a forward direction jwhile. the brushes are revolving and applying the coating material. The machine :is

thus automatically fed or moved in a forward directionv as the pipe is coated Without any particular attention `or eort on the part ofthe operator.

.The present machine is adapted to handle 'pipes of various sizes or diameters.

It is, therefore, necessary to adjust the position of the tank-and brushes `with relation to the pipe and carriage and this is accomplished as follows: lThe tank proper is suspended, as at 24, from arms 25 pivotally mounted, as at 26, in the lower ends of hangers 4,. The up er ends of arms 25 .are connected by links 2! so that they will move in unison, and one of the arms is extended, as at 25, to form a lever by which they may be moved or swung about their pivots to raise or lower the tank With relation to the pipe and carriage; the lever being locked in any adjusted position by means of the paivl 28 and rack bar 29. This adjustment permits brushes 9 and'arms 8 to be moved or raised into position With relation to a pipe of pracllO ' tically any diameter. I The spring arms 11.

are also adjustable with relation to the pipe vas the flanged collars to which they are secured may be adjusted longitudinallyl on the shaft by removing or adding washers 30; the collars being screws 3l. `Any slack in the chain caused 'by changing the position of the tank isin this instance' automatically taken up by'the` spring-actuated idler indicated at 33.

A machineconstructed as here shown is simple and substantial in construction and is cheaplyand veasily operated as the only adjustment necessary is that of the brushes 'and supply tank. The machine is operated by two men, one turning the' right-hand cla'nk 2 1y and the other the left-hand crank. Power isinrrthis manner transmitted to -revolve the brushes and propel the carriage in a forward direction `at the same time. The bottom and sides of the pipe are thus quickly and thoroughlyy covered with the bitumastic composition, or like material,

with the expenditure of little e'ifortor skill on the part of the operator. f

The materials and finish of the several .parts of the machine are such as the eX- l. A device Iof the character described comprising a carriage supported by rollers on a pipe, a tank suspended from the carriage below the pipe, said tank' adapted to contain the material with whichthe pipe'is to be coated, ashaft journaled crosswise of the tank, a brush supporting member secured on said shaft-having a plurality of brushes mounted thereon adapted to engage" the bottom side of the pipe, a plurality of radially disposed spring arms carried near each end of the shaft having brushes secured on their outer ends engageable with the sides of the pipe, means forrevolving the shaft to bring the brushes successively into engagement with Afor propelling the carriage along the pipe.

2. A device of the character described comprising a carriage supported by rollers on a pipe', a tank suspended from the carriage below the pipe, said tank adapted to 'contain the material with which the pipe is to be coated, a shaft journaled cross wise of the tank, a. brush supporting member `sei cured on said shaft having a plurality of brushes mounted thereon' adapted to engage the bottom side of the pipe, a pluralityof secured in position by` the pipe, and means,v

end of the shaftghavingbrushes secured on their outer endsengageable with the sides of the pipe, means 'for revolving thefshaft to lbring the brushes'r, successively into engagement with the pipe, means for propelling the carriage alongthe pipe, and means for raising-or lowering the vtank with relation to the pipe and carriage.

`3, A device of the-"character described comprising a carriage vsupported by rollers on a 'p-ipe, .a tank suspended fromthe carriage belowiiel pipe, sai'dtank adapted to contain the material with jwhich'the pipe is to be coated,`ashaft journaled crosswise of the tank, 'a brush supporting member secured on said shaft havinga plurality of brushes mounted thereon adapted to engage the bottom side pf, the pipe, a plurality of radially disposed arms carried near each end ofthe shaft having brushes securedpn' their outer ends engageable withthe sides radially disposed arms carried near each" of the pipe, said side brushes 'adapted toVA form a continuation of the bottom brushes,

means `for adjusting said arms l'on'gi tudi A nally on the shaft, means for revolving lthe shaft to .bring the brushes successively into engagement with the pipe, and'means forv propelling the carriage along the pipe.

4. A device of the character described comprising a carriage supported by rollers on a pipe, a tank suspended from the carriage below the pipe, saidtank adapted to contain the material withwhich the pipev is to be coated, ga shaft journaled-crosswise of vthe tank, a brushr supporting member seY cured on said shaft havinga plurality of brushes mounted thereon adapted to engage the bottom side ofthe pipe, af plurality of radially disposed arms'carriedgnear each endof the shaft having brushes secured on their outer'ends engageable ,with the sides of the pipe, means for adjusting said arms longitudinally on the shaftprneans for revolving the shaft to bring the'bru'shes successively into engagement vwith theapipe, pelling the, carriage-4v with relation tothep'ipe and carriage.l

5. Inf'a' pipe painting machine, theA combi- 11o means for proalongirhe vpipa-i1 and means for 'raising 'fand loweringftheftank nation of a carriage" adapted-to travel V Sonar pipe tobevpainted, said carriage havlngan' Hnderslu'ng paint receptacle beneathf'tlieI pipe, rotatable `means for applying .p`aint.

from said-receptacle'to the underside ofthe' pipe, means vconnecting' the carriage withth'e pamt applying means ifor driving-the salue paintreceptacle without disturbing -said driving connection. j A 6. VAIn a pipe painting machine, the comf A1n unison,.`and means for adjusting said" bination"of'acarriage adapted to travel on afi:

pipetobefpaintedA an adjustable underslung paint receptac i 'supported by said carriage beneath the pipe, means for applying paint from' said receptacle to the under side of the pipe, said last named means including a rotary brush, and means at all times brush for driving the same in unison.

f 7. In a pipe painting machine, a .carriage adapted to travel on a pipe to be painted, a receptacle below said carriage, linksfor suspending said receptacle from the carriage,

rotatable paint applying means within the receptacle, means for driving the carriage and the paint applylng means in unison, and

means for swinging said links to adjust the pipe to vbe painted, links supporting said rereceptacle to and from the carriage.

8. In a pipe painting machine, the combination'of ha carriage adapted to travelon a ceptacle, and means for"moving said links to adjust the reeeptaeleto and from said carriage. 4 1

9. In a pipe painting machine, a shaft, a plurality of spring arms carried by said shaft, brushes on said arms, and means for adjusting said arms laterally on the shaft.

l0. In a pipe painting machine, a earriage, a paint receptacle `carried thereby, means for adjusting said receptacle to and f from Ithe oarriage,..a'rotary 'brush'within said receptacle, driving means for rotating said brush and'popelling the carriage along the pipe, and means for automatically taking up the slack in said driving means as the receptacle is adjusted.

Intestimony whereof Iv have` hereunto set my hand in thelpresence of two subscribing witnesses. m

RUSSELL H. HUBBELL. -1 Witnesses i M. V; COLLINS, vH. M. Moons. 

